ASUS ROG Phone II ZS660KL vs Samsung Galaxy S26 Ultra
The ASUS ROG Phone II ZS660KL (2019) runs on the Qualcomm Snapdragon 855+, while the Samsung Galaxy S26 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $899 and $1299. By overall MobileRank rating, the Samsung Galaxy S26 Ultra leads — 84/100 vs 52/100 (a 32-point difference). Key differences: the ASUS ROG Phone II ZS660KL has the bigger battery (6000 mAh vs 5000); the main camera is 48 MP vs 200 MP; the Samsung Galaxy S26 Ultra is faster in AnTuTu (3,463,142 vs 859,084); the Samsung Galaxy S26 Ultra is noticeably lighter (214g vs 240g).
Profile comparison
Category scores
ASUS ROG Phone II ZS660KL
Samsung Galaxy S26 Ultra
What makes ASUS ROG Phone II ZS660KL better?
- Bigger battery: 6000 vs 5000 mAh
- Cheaper at launch: $899 vs $1299
- Overall rating 52/100
What makes Samsung Galaxy S26 Ultra better?
- Higher AnTuTu: 3463142 vs 859084
- Better Geekbench Single: 3601 vs 1031
- Better Geekbench Multi: 10686 vs 2864
- Faster charging: 60W vs 30W
- Better main camera: 200MP vs 48MP
- Lighter: 214g vs 240g
- Higher performance (96/100 vs 55/100)
- Better camera (86/100 vs 39/100)
- Longer battery life (61/100 vs 53/100)
- Better display (88/100 vs 79/100)
- Better portability (51/100 vs 20/100)
Comparison verdict
Comparing the ASUS ROG Phone II ZS660KL vs the Samsung Galaxy S26 Ultra, the Samsung Galaxy S26 Ultra scores 32 points higher (84/100 vs 52/100). In the "performance" category, the Samsung Galaxy S26 Ultra leads (96/100 vs 55/100). In the "camera" category, the Samsung Galaxy S26 Ultra leads (86/100 vs 39/100). Value score: ASUS ROG Phone II ZS660KL — 16/100, Samsung Galaxy S26 Ultra — 78/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (96/100 vs 55/100). In the "display" category, the Samsung Galaxy S26 Ultra is a bit better (88/100 vs 79/100). In the "camera" category, the Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (86/100 vs 39/100). In the "battery" category, the Samsung Galaxy S26 Ultra is a bit better (61/100 vs 53/100). In the "portability" category, the Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (51/100 vs 20/100).
Specs comparison
| Specification | ASUS ROG Phone II ZS660KL | Samsung Galaxy S26 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 859084 | 3463142 | |
| Geekbench Single | 1031 | 3601 | |
| Geekbench Multi | 2864 | 10686 | |
| Display | 6.6" AMOLED | 6.9" Dynamic AMOLED 2X | |
| Resolution | 1080x2340 | 3120x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6000 mAh | 5000 mAh | |
| Charging | 30W | 60W | |
| Wireless charging | 0W | 25W | |
| DXOMark (camera) | — | 157 | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 24 MP | 12 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 / ROG UI | Android 16 / One UI 8.5 | |
| Brightness (peak) | — | 2600 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 171.0×77.6×9.5 mm | 163.6×78.1×7.9 mm | |
| Weight | 240 g | 214 g | |
| Launch price | $899 | $1299 |
Camera comparison
ASUS ROG Phone II ZS660KL
- Main: 48MP f/1.8
- Ultrawide: 13MP
- Front: 24MP
Samsung Galaxy S26 Ultra
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Display comparison
ASUS ROG Phone II ZS660KL
- 6.6" AMOLED
- Resolution: 1080x2340
- Refresh rate: 120 Hz
Samsung Galaxy S26 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Battery and charging
ASUS ROG Phone II ZS660KL
- 6000 mAh
- Wired: 30W
- No wireless charging
Samsung Galaxy S26 Ultra
- 5000 mAh
- NanoReview test: web browsing 10:12 hrs, total 28:50 hrs
- Wired: 60W
- Wireless: 25W
Overall performance score
We compared ASUS ROG Phone II ZS660KL and Samsung Galaxy S26 Ultra, covering their specs and all relevant benchmarks.
Samsung Galaxy S26 Ultra leads ASUS ROG Phone II ZS660KL by 75.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $400. ASUS ROG Phone II ZS660KL was $400 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (96/100 vs 55/100).
display
In the "display" category, the Samsung Galaxy S26 Ultra is a bit better (88/100 vs 79/100).
camera
In the "camera" category, the Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (86/100 vs 39/100).
battery
In the "battery" category, the Samsung Galaxy S26 Ultra is a bit better (61/100 vs 53/100).
portability
In the "portability" category, the Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (51/100 vs 20/100).
Frequently asked questions
Which is better: the ASUS ROG Phone II ZS660KL or the Samsung Galaxy S26 Ultra?
The Samsung Galaxy S26 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL by 32 points (84/100 vs 52/100).
What is the rating of the ASUS ROG Phone II ZS660KL and the Samsung Galaxy S26 Ultra?
The ASUS ROG Phone II ZS660KL has a MobileRank rating of 52/100, the Samsung Galaxy S26 Ultra — 84/100.
Which has the better camera: the ASUS ROG Phone II ZS660KL or the Samsung Galaxy S26 Ultra?
The Samsung Galaxy S26 Ultra leads on camera score (86/100 vs 39/100).
Which is more powerful: the ASUS ROG Phone II ZS660KL or the Samsung Galaxy S26 Ultra?
The Samsung Galaxy S26 Ultra leads on performance (96/100 vs 55/100).
Should you choose the ASUS ROG Phone II ZS660KL over the Samsung Galaxy S26 Ultra?
The Samsung Galaxy S26 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, budget-conscious buyers.